This module has a single purpose—to copy a local file to a remote data store:

- name: copy file to datastore
  vsphere_copy:
    hostname: "{{ vsphere_host }}"
    username: "{{ vsphere_username }}"
    password: "{{ vsphere_password }}"
    src: "/path/to/local/file"
    datacenter: "my_datacenter"
    datastore: "my_datastore"
    path: "path/to/remove/file"
  transport: local

As you can see, we are copying the file from /path/to/local/file to path/to/remove/file in the my_datastore data store which is hosted in the my_datacenter data center.